The Vajrayana (Sanskrit: lit. The Adamantine Vehicle) school of Buddhism, practiced predominantly in Tibet, Mongolia and Bhutan, consists of a collection of techniques for the practice of Mahayana, along with the texts that expound those techniques (the Tantras). It is also known to the west as Tantric Buddhism. Being the foundation for Buddhism, it is sometimes expounded as a third and separate major school of Buddhism, alongside the Mahayana and Theravada.